Intermittent feed change mechanism



u 1946- s. L. CASELLA 2,406,664

INTERMITTENT FEED CHANGE MECHANISM File d Nov. 15,. 1942 5 Sheets-Sheet 1 INVENTOR 5500/00 1. 645.5414

ATTORNEYS Aug. 27, 1946. ASELLA 2,406,664

INTERMITTENT FEED CHANGE MECHANISM Filed Nov. 15, 1942 5 Sheets-Sheet 2 Flag.

. INVENTOR 62-00mm l. 048ZLA BY Y A TTORNE Y6 A g. 27, 1946. s. L. CAS'ELLA 2, 06,664

I INTERMITTENT FEED CHANGE MECHANISM Filed Nov. 15, 194:2 s Sfieets+Sheet s- INVENTOR Ssoouuo L. 04.952414 m w 2 M ATTORNEY Auga 27, 1946;. s, CASELLA 2,406,664

INTERMITTE NT FEED CHANGE MECHANISM Filed Nov. 15, 1942 5 Sheets-Sheet 5 Flt-3.5.

A TTORNEYS Patented Aug. 27, 1946 INTERMITTENT FEED CHANGE MECHANISM Secondo' L. Casella, Brooklyn, N. Y., assignor to Morey Machinery 00., Inc, Astoria, Long Island, N. Y., a corporation of New York Application November 13, 1942, Serial No. 465,814

10 Claims. 1

" This invention relates to intermittent feed mechanisms and more particularly to such mech v .anisms effecting the carriage feed in metal shapers, although not so limited.

One object of the present invention is a vari! ablethrow of the feed through an infinite number of changes in throw within prescribed limits while the machine is in operation.

Another object of the. invention is the utilization of the full throw of a cam in effecting each variation in the movement of the feed.

Anothe object of the invention is to avoid all shock to the 'moving parts, this through the instrumentality of a constantly operating card. 7

Another object of the invention is the provision of instrumentalities providing for an in-' finite number of gradations of feed within given limits. These and other objects of the invention and the means for their-attainment will be more apparent from the following. detailed description; taken in connection with the accompanying drawings illustrating one embodiment by which the invention may be realized and in which:

Figure 1 is a View showing a shaper to which the carriage feed transmission mechanism of this invention is applied;

Figure 2 is a view in vertical section showing the carriage feed transmission mechanism of this invention;

Figure 3 is a transverse sectional view the plane indicated by the line 33 of Figure 2 and looking in they direction of the arrows;

Figure 4 is a transverse vertical sectional view taken in the plane indicated by the line 4-4 of Figcbre 3 looking in the direction of the arrows; an

Figure 5 is afragmentary View in perspective showing the coacting instrumentalities by which the feed is initiated and controlled.

Referring first to Figure 1, a shaper, in its entirety, is shown having the rain I!) and carriage I 2, as will be understood. The feed is effected by the shaft l4 controlled and actuated by instrumentalities within the housing l6, I8, carried on the base of the ram l0 convenient to the hand of the operator, the degree, of feed of thecarriage l2, for instance, being determined by the hand lever 20. g I

Referring now also to Figures 2 and 4, a constantly rotating shaft 22 is provided, which is driven from any convenient source of power, preferably from another moving part of the machine. Sh'aft 22 is journalled in an anti-friction bearing shown as the ball bearing 24, mounted taken in in the closure I6 forming a part of the housing l6, E8 of the mechanism. 'The shaft is held in position in theball race 25 by a lock nut 21. Keyed as at 29 to the lowermost end of the shaft Z Zis a hub member 3| to which a cam 33 is secured in proper position as by the screw 35. Th'e cam 33 is thus also constantly rotating. b

J ournalled in the lower end of hub member}! and coaxial with the shaft 22; as within an anti friction bearing 31 is the upperend of a driven shaftts, the other end of which issuitably sup ported by an anti-friction bearing 43 carried in a collar 45 supported from the housing section l8. 4

The shafts 22 and 39 are in axial prolongation'of one another but are independent, in that the shaft 38 is rotated only indirectly from the shaft 22 in a manner which will be apparent from the fol-' lowing description;

Mounted on the driven shaft 39 is a p n on 41 which is free for rotation about the shaft 39 and is in mesh with a toothed segment 49; The

toothed segment 49 is carried upon the end of an arm 5| (Figure 5), forming part of a bell crank lever-like structure 5|, 53 shown in plan in Fig ure 3; The extremity of the other arm 53 of the bell crank lever 5l- 53 has, pivotallymounted thereon; a stud shaft 55 on which is journalled a shoe 51 sliding in a downwardly facing groove 59 in an arcuate or elongated member 5i which is 'pivotally supported on a shaft 63 depending from the housing closure 16. The bell crank is 'ful crumed on a stud'shaft 65 mounted on an adjustable sector 61 for rotation about theaxis of drive shaft 22r Sector 61 is supported and moved on spaced horizontal tracks 69 and ll and retainedin position by gibs 69' and H, removable,

as by the screws 13, in the interest of manufactureand assembly. The sector-is formed'onits outer periphery with a rack 15 shown best in Figures 2, 3 and 5 and is adjustable along these tracks by a pinion l! on a shaft 19 rot'atably mountedin the cover member l6 and turned'in adjustment, through the instrumentality of the worm Bl on shaft 83carrying the handle 20. The end of the shaft 19 carries a dial graduated to show the degree of adjustment of the feed.

As shaft 22 rotates, and the cam 33 therefore also rotates, the cam 33 engages a roller 85 rotatably mounted on a stud shaft 81 extending up wardly from a boss 89 on the edge of the topsurface of the arcuate member 6! formed in its lower surface with the downwardly facing groove 59. The grooved member BI is pivoted for oscillationin a horizontal plane on a shaft 63-whichf is rotatably mounted and suspended in bearings in section I35.

the cover I 6. The grooved member 6| is normally urged into contact with the cam 33 by a push rod 93 whereof the head 95 is pivoted, as on stud 91, on the upper solid face of the grooved member 6I. The push rod 93 is slidable in a bushing 99, removably carried in the wall of the upper housing portion I6, there being a spring I3I between the head 95 of the plunger 93 and the bushing 99 to urge the stud 91 and thereby the roller 85 supported on the end of the grooved member 6| into the path of the cam 33.

Pinion 41, as pointed out hereinbefore, is not fastened to the driven shaft 39. It is keyed, as at I93, to a, sleeve I35 which is concentric with the shaft 39 and has a downwardly and outwardly extending skirt portion I91 terminating in an outwardly directed flange I99 having therebelow a circular rib or shoulder II I spaced inwardly of the edge of the skirt I91. A supporting disc H3 is also carried on a shoulder II on the lower portion of shaft 39. This disc II3 has an upwardly extending rib or annular shoulder H1 in the same cylindrical plane as shoulder or rib I II and positioned by the shoulders. Mounted between the flange I 99 and the rim of disc H3, is an annular collar IIS and within the annular collar H9 is the outer clutch element I2I of an overrunning clutch comprising the inner clutch element I23 which is keyed to shaft 39. It will be recognized that when the element I2I is rotated in one direction, the shaft 39 is caused to rotate in the same direction through the instrumentality of the rollers I25 coacting with the clutch surface members IZI, I23. If, on the other hand, the element I2I rotates in the opposite direction, no drive with shaft 39 is effected between the pinion 41 and the shaft 39 because the outer clutch member I 2I and skirt I91 are rotated in the same direction and release these parts under the influence of the spring I9I. When, however, the shaft 39 is rotated through a predetermined angle it causes the rotation, through the instrumentality of the bevelled pinion I21, of the combined bevelled gear I29 and clutch element I45, which is keyed to the sleeve I which is rotatably mounted on shaft I3I. Shaft I3'I, anextremity of which is connected to the shaft I4 through coupling I33, may be selectively connected with the gear I29 for intermittent actuation of shaft I3I and the table. The clutch sleeve I41 is keyed to shaft I3I. By moving sleeve I41 to the left (as viewed in Figure 2), the clutch surfaces I46 and I are engaged. .Such movement of the clutch sleeve is shown as effected by the arm I49 on the shaft I5I and operated by the handle I53 (Figure 1).

The same clutch mechanism may, selectively, be utilized to efiect continuous operation of the carriage.

The shaft I55 is continuously rotating, say from the prime mover of the machine and carries the bevelled gear I51 meshing with the bevelled gear I59 keyed, as at I6I, to a sleeve I62 on the shaft section I63. The sleeve I62 carries the clutch face or clutch teeth I65 selectively engaging the clutch facing or clutch teeth I61 on the end of the reciprocable clutch sleeve I41 opposite to the clutch face I46.

Provision is also made for braking the sleeve The sleeve I35 is keyed as at I31 to a brake drum I 39 which is encircled by a springpressed brake band I4I which can be tightened to the desired degree by the screw I43 to prevent overrunning of the sleeve I35 and the. train f mechanism rotating the same.

Shaft section I63 may also be utilized to operate a force feed oiling system. A cam I19 on the end of the shaft may actuate the spring pressed plunger I12 of a pump.

The train of mechanism described above extending from the beveled pinion I21 through the coupling I33 is not specifically claimed herein as it is the subject matter of claims in my divisional application filed November 16, 1943, Serial No. 510,561.

The operation of the device will be apparent from the foregoing description. Suifice it to say that the driven shaft 39 which in turn actuates the moving element such as the carriage, is rotated through a predetermined angle determined by the angle through which the arm 5i of the bell-crank turns in rotating the pinion 41. The angle through which the arm 5! moves is in turn dependent on two factors. One factor is the position of the shoe 51 in the groove 59. Obviously, the further away the shoe 59 is from the axis 63 of rotation or arcuate movement of the grooved member, the longer will be the arcuate movement of the end of the arm 53 of the bellcrank and hence of the arm 5I thereof and the toothed segment 49 which rotates driven shaft 39. This is because the movement of the end of the grooved member 6| about its pivot is always constant by reason of the effective length of the cam 33 but the path or degree of movement of the shoe about the pivot of the bell-crank member becomes progressively shorter as the shoe is moved in the groove toward the pivot of the grooved member 6 I. Thus by moving the fulcrum point 95 of the bell crank toward the fulcrum point 63 of the grooved member, the stroke is automatically increased. By the provision of the mechanism described an infinite number of gradations of feed is obtained. All gradations of feed utilize the full stroke of the cam but restrict its effectiveness to correspond to the feed required.

This invention distinguishes over the prior art in that the variable throw of the carriage feed transmission mechanism is effected throughan infinite number of changes in throw while the machine is in operation and in each instance utilizing the full throw of a single cam as distinguished from'all other known instrumentalities for this purpose which rely on the use of only a portion of the movement of the actuating device, whether cam or other device. By the provision of a constantly operating cam as the actuating instrumentality, a smooth movement is possible devoid of all shock to the moving parts. At the same time, the overrunning clutch between the power input and the power output makes possible an infinite number of graduations of feed, 1. e., as low, for instance, as one ten-thousandth of an inch.

Various modifications will occur to those skilled in the art in the configuration and disposition of the component elements going to make up the invention as a whole as well as in the selection of instrumentalities performing the same function in a different manner and no limitation is intended by the phraseology of the foregoing description or illustrations in the annexed drawings except as indicated in the appended claims.

What is claimed is:

1. In feed change mechanism, in combination, a power shaft, a cam on the power shaft, a driven shaft, a gear loosely mounted on the driven shaft, one-way clutch means between the gear and the driven shaft, a toothed sector, means to support the toothed sector for movement in an arcuate path about the axis of the power shaft, abell crank pivotally mounted on the toothed sector, a toothed segment on one arm of the bell crank and in mesh with the gear on the driven shaft, a shoe pivotally mounted on the end of the other arm of the bell crank, an arcuate member formed with a groove in its lower surface, means to pivotally mount one end of the arcuate member, means normally urging the other end of the arcuate member toward the cam, said groove receiving the shoe on the bell crank, and a roller pivotally mounted on the other end of said arcuate member for intermit tent actuation by the cam whereby said arcuate member is oscillated about its pivot to move the shoe in an arcuate path about the axis ofthe bell crank pivot to oscillate the bell crank and thereby the driven shaft through an angle proportional to the arc of movement of the shoe.

2. In feed change mechanism, in combination, a power shaft, a cam on the power shaft, a driven shaft, a gear loosely mounted on the driven shaft, one-way clutch means between the gear and the driven shaft, a toothed sector, means to support the toothed sector for movement in an arcuate path about the axis of the power shaft, a bell crank pivotally mounted on the toothed sector, a toothed segment on one arm of the bell crank and in mesh with the gear on the driven shaft, a shoe pivotally mounted on the end of the other arm of the bell crank, an arcuate member formed with a groove in its lower surface, means to pivotally mount one end of the arcuate member, means normally urging the other end of the arcuate member toward the cam, said groove receiving the shoe on the bell crank, and anti-friction means mounted on the other end of said arcuate member for intermittent actuation by the cam whereby said arcuate member is oscillated about its pivot to move the shoe in an arcuate path about the axis of the bell crank pivot to oscillate the bell crank and thereby the driven shaft through an angle proportional to the arc of movement of the shoe.

3. In feed change mechanism, in combination, a power shaft, a cam on the power shaft, a driven shaft in prolongation of the power shaft, a gear loosely mounted on the driven shaft, oneway clutch means between the gear and the driven shaft, a toothed sector, means to support the toothed sector for movement in an arcuate path about the axis of the power shaft, a bell crank pivotally mounted on the toothed sector, a toothed segment on one arm of the bell crank and in mesh with the. gear on the driven shaft,

a shoe pivotally mounted on the end of the other arm of the bell crank, an arcuate member formed with a groove in its lower surface, means to pivotally mount one end of the arcuate member, means normally urging the other end of the arcuate member toward the cam, said groove receiving the shoe on the bell crank, and a roller pivotally mounted on the other end of said arcuate member for intermittent actuation by the cam whereby said arcuate member is oscillated about its pivot to move the shoe in an arcuate path about the axis of the bell crank pivot to oscillate the bell crank and thereby the driven shaft through an angle proportional to the arc of movement of the shoe.

4. In feed change mechanism, in combination, a power shaft, a cam on the power shaft, a driven shaft, 9, gear loosely mounted on the driven shaft,

one-way clutch means between the gear and the driven shaft, a sector, means to support the sector for movement in an arcuate path about the axis of the power shaft, a bell crank pivotally mounted on the sector, a toothed segment on one arm of the bell crank and in mesh with the gear on the driven shaft, a shoe pivotally mounted on the end of the other arm of the bell crank, an arcuate member formed with a groove in its lower surface, means to pivotally mount one end of'the arcuate member, means normally urging the other end of the arcuate member toward the cam, said groove receiving the shoe on the bell crank, and a roller pivotally mounted on the other end of said arcuate member for intermittent actuation by the cam whereby said arcuate member is oscillated about its pivot to move the shoe in an arcuate path about the axis of the bell crank pivot to oscillate the driven shaft through an angle proportional to the arc of movement of the shoe.

5. In feed change mechanism, in combination, a power shaft, a cam on the power shaft, a driven shaft, a gear, operative connections between the gear and the driven shaft, a sector, means to support the sector for 'movement in an arcuate path about an axis, a bell crank pivotally mounted on the sector, a toothed segment on one arm of the bell crank and in mesh with the gear operatively connected with the driven shaft, 2. shoe'pivotally mounted on the end of the other arm of the bell crank, an arcuate member formed with a groove in its lower surface, means to pivotallymount one end of the arcuate member, means normally urging the other end of the arcuate member toward the cam, said groove receiving the shoe on the bell crank, and

means on the other end of said arcuate member for intermittent actuation by the cam whereby said arcuate member is oscillated about its pivot to move the shoe inan arcuate path about the axis of the bell crank pivot to oscillate the driven shaft through an angle propotional to the arc of movement of the shoe.

6. In feed change mechanism, in combination, a first shaft, cam means on the first shaft, a second shaft, a gear, operative connections between the gear and one of the shafts, a sector, means to support the sector for movement in an arcuate path about an axis, a bell crank pivotally I mounted on the sector, a toothed segment on one arm of the bell crank and in mesh with the gear, shoe means mounted on the end of the other arm of the bell crank, an arcuate member formed with a groove receiving the shoe means on the bell crank, means to pivotally mount one end of the arcuate member and means normally urging the other end of the arcuate member toward the cam, said arcuate member being intermittently actuated by the cam means whereby said arcuate member is oscillated about its pivot to move the shoe means in an arcuate path about the axis of the, bell crank pivot to oscillate said "one of the shafts through an angle proportional to the arc of movement of the shoe means.

7. In feed change mechanism, in combination, a first shaft, cam means on the first shaft, a second shaft, a gear, operative connections between the gear and one of the shafts, a sector, means to position the sector for movement in an arcuate path about an axis, lever means pivotally mounted on the sector, a toothed segment on said lever means and in mesh with the gear on one of the shafts, guide means on the lever means, an elongated member formed with a groove in its lower surface, means to pivotally mount one end of the elongated member, and means normally urging the other end of the elongated member toward the cam, said groove receiving the guide means on the lever means, said arcuate member being intermittently actuated by the cam means whereby said elongated member is oscillated about its pivot to move the guide means in an arcuate path about the axis of the bell crank to oscillate one of the shafts through an angle proportional to the arc of movement of the shoe.

'8. In feed change mechanism, in combination, a first shaft, cam means on the first shaft, a second shaft, gear means loosely mounted on one of the shafts, one-way driving means between the gear means and one of the shafts, a sector, means to adjustably position the sector in an arcuate path about the axis of one of the shafts proportional to the desired angular rotation of a shaft, a bell crank pivotally mounted on the sector, operative connections between one arm of the bell crank and the gear means, guide means on I the end of the other arm of the bell crank, an arcuate member, coacting guide means on the arcuate member, means to pivotally mount one end of the arcuate member, and means normally urging the other end of the arcuate member toward the cam, said arcuate member being intermittently actuated by the cam means whereby said member is oscillated about its pivot to oscillate one of the shafts through an angle proportional to the are of movement of the guide means.

9. In feed change mechanism, in combination, a first shaft, cam means on the first shaft, a second shaft, gear means, one-way driving connections between the gear means and one of the shafts, a sector, means to adjustably position the sector through a predetermined movement pro portional to the desired angular rotation of one of the shafts, lever means pivotally mounted on the sector, operative connections between the lever means and the gear means, a pivoted guide member, coacting guide means between the lever means and the guide member, and means normally urging the guide member toward the cam, said guide member being adapted to be intermittently actuated by the cam means whereby said guide member is oscillated about its pivot to move the coacting guide means in an arcuate path about the said axis to oscillate one of the shafts through an angle proportional to the arc of movement of the coacting guide means.

10. In feed change mechanism, in combination, a power shaft, a cam on the power shaft, a driven shaft, a gear loosely mounted on the driven shaft, one-way clutch means between the gear and the driven shaft, a toothed sector, means to support the toothed sector for movement in an arcuate path about the axis of the power shaft, a bell crank pivotally mounted on the toothed sector, a toothed segment on one arm of the bell crank and in mesh with the gear on the driven shaft, a shoe pivotally mounted on the end of the other arm of the bell crank, an arcuate member formed with a groove in its lower surface, means to pivotally mount one end of the arcuate member, means normally urging the other end of the arcuate member toward the cam, said groove receiving the shoe on the bell crank, and a roller pivotally mounted on the other end of said arcuate member for intermittent actuation by the cam whereby said arcuate member is oscillated about its pivot to move the shoe in an arcuate path about the axis of the bell-crank pivot to oscillate the bell crank and thereby the driven shaft through an angle proportional to the arc of movement of the shoe, a carriage feed shaft and clutch means between the driven shaft and the carriage feed shaft.

SECONDO L. CASELLA. 

